Peterson, D.E. and Danielopol, D.L. and Finger, K. and Iepure, S. and Mariani, S. and Montanari, A. and Namiotko, T. (2013) Reconnaissance of ostracode assemblages in the Frasassi Caves, the adjacent sulfidic spring, and the Sentino River in the northeastern Apennines (Marche region, Italy). Journal of Cave and Karst Studies, 75 (1). pp. 11-27.
Full text not available from this repository.Abstract
Rich, diverse assemblages comprising a total (live + dead) of twenty-one ostracod species belonging to fifteen genera were recovered from phreatic waters of the hypogenic Frasassi Cave system and the adjacent Frasassi sulfidic spring and Sentino River in the Marche region of the northeastern Apennines of Italy. Specimens were recovered from ten sites, eight of which were in the phreatic waters of the cave system and sampled at different times of the year over a period of five years. Approximately 6900 specimens were recovered, the vast majority of which were disarticulated valves; live ostracods were also collected. The most abundant species in the sulfidic spring and Sentino River were Prionocypris zenkeri, Herpetocypris chevreuxi, and Cypridopsis vidua, while the phreatic waters of the cave system were dominated by two putatively new stygobitic species of Mixtacandona and Pseudolimnocythere and a species that was also abundant in the sulfidic spring, Fabaeformiscandona ex gr. F. fabaeformis. Pseudocandona ex gr. P. eremita, likely another new stygobitic species, is recorded for the first time in Italy. The relatively high diversity of the ostracod assemblages at Frasassi could be attributed to the heterogeneity of groundwater and associated habitats or to niche partitioning promoted by the creation of a chemoautotrophic ecosystem based on sulfur-oxidizing bacteria. Other possible factors are the geologic age and hydrologic conditions of the cave and karst aquifer system that possibly originated in the early–middle Pleistocene when topographic uplift and incision enabled deep sulfidic waters to reach the local carbonate aquifer. Flooding or active migration would have introduced the invertebrates that now inhabit the Frasassi Cave system.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QL Zoology |
| Depositing User: | José Ángel Gómez Martín |
| Date Deposited: | 21 May 2013 12:38 |
| Last Modified: | 21 May 2013 12:38 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/196 |
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